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      10-18-2007, 02:45 PM   #13
lakerfan007
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Drives: BMW X5 3.0i
Join Date: Jul 2006
Location: Boulder CO

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Quote:
Originally Posted by swiss_cornholio View Post
Altitude?? Joburg is at 1700 something meters. A N/A engine looses about 10% per 1000m. So in this case it's not even 20%. 420*0.8=336, so the 335i comes close but doesn't outperform the M3. In Switzerland we have several mountain passes >2000m and N/A cars don't feel extremely slowed down there.
Now if you drive the same car at Sea Level, you will definetly feel the difference, I live in colorado, at 5000ft my X5 can't even beat a neon off the line, and it's worse when i go upto Vail Pass which is >7000ft...... at sea level though, the car is more responsive and the power band is much greater
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